Compression-cock.



. E. G. HEDGBS COMPRESSION 000K.

APPLIQAIIONIILBD FEB. 18, 1907.

I 905,181. x Patented Dec. 1, 190a.

' omy of manu acture.

EDWARD G. HEDGES, OF NEWARK, NEW JERSEY.

COMPRESSION-COOK.

Specification of Letters Patent.

' Patented Dec. 1, 1908.

Application filed February 18, 1907. Serial No. 357,893.

' valve-seat, with valve-stem threaded to such gland, and a packing-washer upon the innerend of the stem to close the seat.

The invention comprises a particular construction for the support of the packingwasher uponthe end of the valve-stem, and embraces also means for preventing leakage around the valve-stem when the valve is opened. l

The improvements are shown applied to a compression bib,-Figure 1 being a longitu dinal section, where hatched, at the center I line of the bib; and Fig. 2 being an enlarged view of the valve-stein, partly in section at the center line where hatched.

a designates the valve-seat, b 'the socket over the same in which the gland c is screwed.

d designates a shoulder at the bottom of the socket, with a packing-ring e seated thereon and fitted snugly at the center to the valve-stem f, which is screwed into the center nut of the gland by thread f.

Between the inner end of the gland and the washer e, a disk 9 is inserted and pressed hard upon the packing by, the gland. The disk is dished upwardly atthe middleto admit a fibrous collar h which packs the.

valve-stem closely.

The valve-stem is shown formed at the outer end with an integral crossbar handle 2', which is emplo ed on account of its. econ- Such an integral handle prevents any enlargement of the inner end of the valve-stem to receive the packing-washer j, as the valve-stem must be inserted throughthe gland from the outer side of the same, and I therefore make the inner end of the valve-stem cylindrical,-and smaller than the screw thread, so as to pass readily through the nut in the gland,- and provide a tap-hole in such reduced end to secure a swivel-head is thereon. Y The swivel head is formed with a cup Z fitted to slide having crossbar handle 2 over the inner end of the valve-stem, and a screw m is inserted through the bottom of the cup into the tap-hole in the spindle. In

the bottom of the cup is inserted anannular packing a and the screw passes through the packingqvasher j, the swivel-head 7c, and this annular packing, and holds them all upon the point or inner end of the valvestem.

To permit the turning of the swivel-head upon the valve-stem, the screw is shouldered or so fitted into the valve-stein that the head of the screw slightly clears the packingwasher,v as shown in Fig. 2, and leakage around the body of the screw would therefore be possible when the packing-washer is I pressed firmly upon the valve-seat. The annular packing n operates to wholly prevent such leakage, by forming a tightly packed joint between the swivel-head and the end of the valve-stem, the packingwasher itself also making a tight joint with the outer side of the swivel-head.

When the packingwasher is crowded upon its seat by screwin the stem inwardly, the packing-washer ma es a tight joint between the seat and the swivel-head, and the annular packin is also tightly compressed and makes a tig t joint between the swivelhead' and the end of the valve-stem, so that all leakage past the stem is prevented.

The cup Z is'largerthan the valve-stem, and when the valve-"stem is screwed outwardly toopen the valve as shown in Fig. 1, the upper end of the cup is pressed forcibly against the packing-ring e, and the packing-washer j is ressed so tightly between the swivel-head and the head of the screw m that no leakage can occur into the interior of the swivel-head. An past the packing ring is prevente and'an escape of fluid pastthe valve-stem throng the gland.

Having thus set forth the nature of theinvention what is claimed herein is: j

1. A compression cock having the threaded socket- 6 over the valve-seat, a shoulder d at the bottom of the socket, thegland c screwed in the socket, and compressing the packingring 6 upon the said shoulder to make a tightjoint therewith, the valvestem f and a thread f fitted to the center of the gland, and the end bf the stem being smaller than such leakage thread the swivel-head 7c fitted movably on the stem and provided with the packing-Washer j to close the valve-seat, and socket above the valve-seat, the socket being the screw m having head resting upon such packing-Washer and extended through the same and through. the face of the swivelhead into the end of the valve-stem, the construction preventing leakage when the valve is opened, by the jamming of the up per end of the swivel-head against the packing-ring e, and the simultaneous crowding of the paekingwasher j against the swivelhead by the head of the screw m.

2. A compression cock having a threaded socket above the valve-seat, a shoulder in the bottom of the socket, a gland screwed in such socket, an annular disk and packingring compressed upon such shoulder, the disk being dished and a fibrous collar inserted between the disk and the packingring, a valve-stem fitted to the disk and packing-ring and having a thread fitted into the gland and a handle upon its outer end, a-sWivel-head secured upon the inner end of the valve-stem and a packingwasher upon the swivel-head to close the valve-seat.

3. A compression cock having a threaded provided ,with a shoulder in its bottom, a gland screwed in such socket, an annular disk and packing-ring compressed upon said shoulder, the disk being dished, and a fibrous collar inserted between the disk and the packing-ring. a valve-stem titted to the disk and pacliingrirny and having a thread fitted into the gland and an integral handle uponits outer end, a swivel-head larger than the valve-stein secured upon the inner end of the stem, a packing-Washer to close the valve-seat, the swivel-head adaptedwhen the stem is retracted for openingthe valve, to press upon the packing-ring under "the gland and prevent leakage around the valve-stem.

In testimony whereof I have hereunto set my hand in the presence of two subscribing Witnesses.

nDWARn HEDGES.

\Vitnesses THOMAS S. CRANE, FRED C. lVIssMAN. 

